Repair Kits Available By Part Number Section 2 Page - GAMECO
Repair Kits Available By Part Number Section 2 Page - GAMECO
Repair Kits Available By Part Number Section 2 Page - GAMECO
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WARNING: Installation, disassembly, repair and maintenance<br />
must be performed only by qualified personnel.<br />
All gas MUST be evacuated from the system before starting<br />
repairs.<br />
Installation, usage and maintenance of this product must be in<br />
compliance with all Engineered Controls International, Inc. instructions<br />
as well as requirements and provisions of NFPA #54, NFPA<br />
#58, DOT, ANSI, all applicable federal, state, provincial and local<br />
standards, codes, regulations and laws.<br />
Inspection and maintenance on a periodic basis is essential.<br />
Be sure all instructions are read and understood before installation,<br />
operation and maintenance. These instructions must be<br />
passed along to the end user of the product.<br />
CAUTION: Contact or inhalation of liquid propane, ammonia and<br />
their vapors can cause serious injury or death! NH 3<br />
and LP-Gas<br />
must be released outdoors in air currents that will insure dispersion<br />
to prevent exposure to people and livestock. LP-Gas must be kept<br />
far enough from any open flame or other source of ignition to<br />
prevent fire or explosion! LP-Gas is heavier than air and may not<br />
disperse or evaporate rapidly if released in still air.<br />
Disassembly and <strong>Repair</strong> Procedure<br />
CAUTION: READ THROUGH ALL OF THESE INSTRUCTIONS, IN-<br />
CLUDING THE NOTICE AND WARNINGS ON THE BACK OF THIS<br />
SHEET, BEFORE BEGINNING ANY DISASSEMBLY OR REPAIR.<br />
NOTE: <strong>Repair</strong>s must be performed in a clean area. Hands, clothing,<br />
tools and work area must be completely free of oil, grease and foreign<br />
matter to prevent contamination of component parts and valves.<br />
A. Disassembly<br />
1 EVACUATE ALL GAS FROM THE SYSTEM BEFORE ANY<br />
DISASSEMBLY OR REPAIR. Turn handwheel counterclockwise<br />
as far as it will go to release any gas remaining in the container.<br />
CAUTION: Do not apply force after valve is fully open.<br />
2. Using a 13 /16" wrench, remove four cap screws from bonnet by<br />
turning counterclockwise. Remove bonnet assembly from valve<br />
body.<br />
3. Remove body gasket and discard.<br />
To Install New Seat Disc:<br />
4. Clamp the square section of bonnet in a vise.<br />
TA7894-50 Assembly For<br />
TA7894P Tank Car Valves<br />
5. While holding the hex section of the seat disc retainer with a 1 5 /16"<br />
wrench, use another wrench to remove the disc retaining nuts.<br />
6. Remove and discard seat disc (A7513F-4T). Install a new one by<br />
pressing into recess of seat disc retainer as shown in Figure 2.<br />
7. Apply Loctite cement (5555LT271) to the first three threads of seat<br />
disc retainer.<br />
CAUTION: Do not allow Loctite to contact seat disc.<br />
8. Thread on disc retaining nut and tighten with a wrench to 240-270<br />
in/lbs torque. Stake nut in two places at retainer threads (see Figure<br />
2) to prevent loosening.<br />
NOTE: If no further repairs are required, disregard steps A-9 through A-<br />
14 and B-1 through B-9 of the instructions. Finish reassembly by<br />
following steps B-10 through B-15 only. TO INSTALL ALL OF THE<br />
TA7894-50 REPAIR PARTS, FOLLOW ALL OF THE REMAINING IN-<br />
STRUCTIONS.<br />
9. Remove handwheel locknut by turning counterclockwise with a<br />
small wrench to allow removal of washer, information disc and<br />
handwheel.<br />
10. Using a 1 3 /8" wrench with a handle of sufficient length to develop a<br />
minimum of 1000 in/lbs torque, turn seal housing counterclockwise<br />
and carefully remove from bonnet.<br />
CAUTION: Do not mar finish of stem.<br />
11. Remove and discard pressure seal rings and o-ring from seal<br />
housing.<br />
12. Using a small wrench on the square section, screw sthe stem down<br />
and out through the bottom of bonnet by turning clockwise (as<br />
viewed from top).<br />
CAUTION: If stem is scratched or scored, a new one must be<br />
installed.<br />
13. Remove and discard seal housing gasket, washer and jam ring from<br />
bonnet. Save spring for reassembly.<br />
14. Inspect stem threads and mating threads in bonnet. If any threads<br />
show definite wear, discard part and install a new one. (See<br />
illustrated parts list for order number.)<br />
Figure 1 – TA7894P TA7894-3 Information Disc<br />
Figure 2 – A7513F-5T<br />
7513-13 Locknut<br />
Seat Disc and Retainer Assembly<br />
7560-37 Washer<br />
7513-15T6 Handwheel<br />
7513-25S O-Ring *<br />
7513-11 Seal Housing<br />
1 5 /16 Hex<br />
7513-42 Pressure Seal Rings (2) *<br />
Seat Disc<br />
7513-9 Jam Ring *<br />
Retainer<br />
7513-21 Washer *<br />
7513-10T Gasket *<br />
A7513F-4T<br />
7513-17 Spring<br />
Seat Disc<br />
A7513F-14 Stem<br />
Seat Disc<br />
7513-18 Cap Screw (4)<br />
Retainer Nut<br />
TA7894-2 Bonnet<br />
stake here<br />
7513-8 Gasket *<br />
7509-7 Stem Holder<br />
7509-16 Stem Retainer (2)<br />
A7513F-5T Seat Disc Retainer<br />
A7513F-4T Seat Disc *<br />
** 5555GS-3 Grease<br />
A7893-5 Plug<br />
** 5555LT271 Loctite Cement<br />
A7892-3 Flange Gasket *<br />
* These items are included in the TA7513-50<br />
A7892-14 Cap Screw<br />
assembly recommended for most repairs.<br />
Body<br />
** Must be ordered separately from Engineered<br />
Controls International, Inc.